53 results about "Network allocation vector" patented technology

Provided are a channel access method and apparatus and a communication device. The method includes: a first device sends a first frame, the first frame comprising a first field, and the first field being used for indicating a channel occupancy time of a first channel; the first field is used for a second device to set or update a network allocation vector (NAV), and the NAV is used for the second device to determine a busy time of the first channel; all or part of the channel occupancy time is used for a first type of devices or a third device to perform communication on the first channel, and the third device belongs to the first type devices.

Provided is a wireless communication terminal that communicates wirelessly. The wireless communication terminal includes a transceiver and a processor. The processor is configured to receive the trigger frame using the transceiver and update the network allocation vector based on the trigger frame. At this time, the trigger frame triggers transmission of at least one wireless communication terminal.

This invention relates to a wireless communication method using network allocation vectors and a wireless communication terminal thereof. A wireless communication terminal is provided. The wireless communication terminal includes a transmitting / receiving unit and a processor. The processor receives a trigger frame using the transmitting / receiving unit and updates the network allocation vector based on the trigger frame. The trigger frame triggers transmission by at least one wireless communication terminal.

Embodiments of the present disclosure relate to a secondary channel communication method, a communication device, and a communication system. The secondary channel communication method comprises: a sending end receives a first message frame in a secondary channel, wherein the first message frame comprises: a first identifier indicating the duration of the first message frame; and the first identifier is set as the duration, sensed by a receiving end, in which an overlapping basic service set physical protocol data unit (OBSS PPDU) occupies a primary channel, or is the same as the duration identified by a second identifier of a second message frame sent by the sending end, so as to ensure that the duration of communication in the secondary channel is not greater than a network allocation vector (NAV) timer duration sensed or set in the primary channel, so that both the sending end and the receiving end can perform communication in the secondary channel, thereby meeting UHR transmission requirements.

A station (STA) receives a first frame via a first channel and sets a first network allocation vector (NAV) associated with the first channel to a non-zero value based on the first frame. The STA transmits a second frame on a channel including the first channel and a second channel, and when the second frame is transmitted, the STA ignores the non-zero value of the first NAV under the condition that a second NAV associated with the second channel is zero.

An integrated circuit of a communication device for controlling a communication process, the communication process comprising: receiving a PHY protocol data unit comprising a duration field, the duration field comprising duration information indicating a duration for which the communication device is prohibited from transmitting a high efficiency, HE, trigger-based TB PHY protocol data unit; issuing a PHY-CCA clear channel assessment primitive parameter indicating bandwidth information about a busy or idle state of each subchannel within an operating bandwidth; updating a network allocation vector, NAV, value based on the duration information when the indicated duration is greater than a current NAV value, and when it is determined that the communication device is not a target receiver of the received PHY protocol data unit; determining a busy / idle state of at least one subchannel comprising a resource unit, RU, in which an HE TB PHY protocol data unit is to be transmitted; and controlling transmission of the HE TB PHY protocol data unit based on the updated NAV value and the busy / idle state of the at least one subchannel, and controlling transmission of the HE TB PHY protocol data unit when the at least one subchannel does not include a primary subchannel, regardless of whether the primary subchannel is busy or idle.

A communication method, apparatus and computer readable storage medium for improving spectrum utilization in a wireless communication system. The spectrum utilization is improved by: determining a data frame under a first link, performing channel sensing under the first link and a second link, updating a network allocation vector timer (NAV timer) under the links according to sensing results under the first link and the second link, and transmitting the data frame according to the NAV timer.

Certain aspects provide a method for wireless communication at a first wireless node. The method generally includes outputting, for transmission to a second wireless node, a first frame indicating one or more candidate nodes with which a TXOP can be shared, the one or more candidate nodes including the second wireless node; performing a frame exchange with one or more third wireless nodes, the one or more third wireless nodes sharing the first BSS with the first wireless node; outputting, for transmission to the second wireless node, a second frame indicating a portion of the TXOP to be shared with the second wireless node, the second frame being output for transmission after the frame exchange; and obtaining, from the second wireless node, a third frame indicating that the TXOP is being returned to the first wireless node.

A station (STA) determines that a physical layer (PHY) protocol data unit (PPDU) being received via a primary channel (PCH) comprises an inter-basic service set (inter-BSS) PPDU. Based on determining that the PPDU being received via the PCH comprises the inter-BSS PPDU, the STA switches from the PCH to a non-primary channel access (NPCA) PCH based on an intra-BSS network allocation vector (NAV) of the STA being equal to zero.

Systems, methods, and devices enhance performance of collocated transceivers in wireless devices. Methods include identifying, using a processing device, an assertion of a radio frequency (RF) active signal, canceling activity of a first transceiver in response to identifying the assertion of the RF active signal, the RF active signal being associated with a second transceiver collocated with the first transceiver, and generating, using the processing device, a network allocation vector (NAV) reset signal in response to identifying a de-assertion of the RF active signal, the NAV reset signal resetting a timer of a wireless device comprising the first transceiver and the second transceiver.

The embodiment of the invention relates to a wireless local area network (WLAN) communication method, communication equipment and a communication system. The wireless local area network (WLAN) communication method comprises the following steps: after the TXOP holder is switched from a secondary channel to a primary channel, sensing whether the primary channel is idle; if it is sensed that the main channel is idle, the TXOP holder empties a count value of a network allocation vector timer (NAV) timer of the main channel; and if it is sensed that the main channel is busy, the TXOP holder updates the count value of the NAVtimer or enters a power saving (PS) mode. According to the embodiment of the invention, through dynamic switching and state sensing between the secondary channel and the primary channel, the access time delay is further reduced, and the UHR transmission requirement is met.

The present application provides a method and apparatus for maintaining a network allocation vector (NAV) timer. The method may be applied to supporting an IEEE protocol, such as an 802.11be / Wi-Fi 7 / Wi-Fi 8 protocol, an IEEE 802.11 integrated mmWave protocol, an IEEE 802.11bf / sensing protocol, or an IEEE 802.15 / UWB protocol. The method can also support a NearLink protocol. The method may be applied to a scenario in which a station may switch between an NPCA mode and a PCA mode. The method comprises: a station maintaining a first NAV timer and a third NAV timer corresponding to a primary channel, and maintaining a first NAV timer and a second NAV timer corresponding to a non-primary channel, which can reduce the number of NAV timers used by a station supporting operation in the NPCA mode and the PCA mode.

A method for switching a channel in a wireless local area network is provided. A station which is a member of a basic service set (BSS) receives information on a non-primary channel access (NPCA) primary channel within a BSS bandwidth of the BSS from an associated access point (AP). The station receives an inter-BSS physical layer protocol data unit (PPDU) on a BSS primary channel and switches from the BSS primary channel to the NPCA primary channel for an NPCA operation if (i) channels occupied by the inter-BSS PPDU does not overlap with the NPCA primary channel, and (ii) the station maintains an intra-BSS network allocation vector (NAV) counter with a zero value.

One example discloses a wireless device including: a wireless transceiver configured to receive a first frame from a first wireless access point (AP) for multi-AP coordination that is not associated with the wireless device and a second frame from a second wireless AP for multi-AP coordination that is associated with the wireless device; and a controller configured to set a network allocation vector (NAV) timer of the wireless device to a non-zero value in response to the first frame and the second frame, wherein the wireless transceiver is further configured to transmit a physical protocol data unit (PPDU) to the second wireless AP even if the NAV timer of the wireless device is non-zero.

There is a method and a device arranged to perform the method. The method comprises transmitting, by a first access point (AP), to a second AP and during a transmit opportunity (TXOP) obtained by the first AP, a first frame indicating a first duration within the TXOP allocated to the second AP; receiving, by the first AP from the second AP and during the first duration, a trigger frame addressed to a first station (STA); receiving, by the first AP from the second AP and during the first duration, a second frame indicating a return of the first duration by the second AP to the first AP; and after receiving the trigger frame and the second frame, transmitting, by the first AP to the second STA, a third frame for resetting a basic network allocation vector (NAV) of the second STA.

The invention relates to a wireless communication method and device. The method is applied to a wireless communication device, and the wireless communication device comprises a wireless fidelity (Wi-Fi) module and a second communication module. The method comprises the steps that a first working time slot of the Wi-Fi module and a second working time slot of the second communication module are acquired, and the first working time slot and the second working time slot are not overlapped; acquiring a network allocation vector (NAV) value in the first working time slot; and in response to the NAV value being greater than a preset time threshold, allocating a time slot corresponding to the NAV value to the second communication module.

The embodiment of the application discloses a Bluetooth data transmission method and device, a storage medium and a wireless communication device, and belongs to the wireless communication field. The starting time point P1 of the BLE connection event is accurately calculated, and the time point P2 of sending the CTS-TO-SELF frame is determined according to the starting time point P1. The technical scheme can send the CTS-TO-SELF frame to inform other WiFi devices that the current frequency band will be occupied for a period of time when the BLE connection event is about to occur. After receiving the CTS-TO-SELF frame, other devices will adjust the NAV network allocation vector according to the information in the frame, so that data transmission is avoided on the frequency band in the period of time, and the communication conflict between the BLE connection event and other WiFi devices is effectively avoided.

Technical features of the present disclosure may relate to a method performed in a wireless local area network (WLAN) system. One embodiment of the present disclosure may relate to a method performed in a WLAN system. According to the described method, a station (STA) may set a network allocation vector (NAV) based on an intra basic service set (BSS) physical protocol data unit (PPDU). For example, an STA may determine whether to consider an NAV based on a packet to be transmitted by the STA and whether the STA is a transmission opportunity (TXOP) holder or a TXOP responder; and, if the STA is neither the TXOP holder nor the TXOP responder, and the packet to be transmitted is related to a low latency packet, the STA may not take into account the NAV.

An access point (AP) detects, via a primary channel (PCH), a physical layer protocol data unit (PPDU). The AP decodes a signal (SIG) field of the PPDU to determine an uplink (UL) / downlink (DL) flag of the PPDU. Based on the UL / DL flag being set to a first value indicating DL, the AP switches from the PCH to a non-primary channel access (NPCA) PCH. After switching to the NPCA PCH, the AP communicates, during a duration of the PPDU, with a station (STA) on the NPCA PCH. The AP switches from the NPCA PCH to the PCH before an end of the PPDU, an end of a network allocation vector (NAV) determined based on the PPDU, or an end of a transmit opportunity (TXOP) associated with the PPDU.

The present application relates to an apparatus for use in a wireless communication device, the apparatus comprising processor circuitry configured to cause the wireless communication device, after switching from a basic service set (BSS) primary channel to a non-primary channel access (NPCA) primary channel: before or at the end of a network allocation vector (NAV) on the BSS primary channel, to switch the NPCA primary channel from the BSS primary channel to the NPCA primary channel; switching from the NPCA primary channel back to the BSS primary channel, where the NAV on the BSS primary channel is set by overlapping BSS transmissions that trigger the switching from the BSS primary channel to the NPCA primary channel.

This disclosure provides methods, components, devices and systems for protection for enhanced long range (ELR) transmissions. Aspects more specifically relate request to send (RTS) and clear to send (CTS) signaling exchanges for configuration of an ELR physical layer protocol data unit (PPDU) that protects ELR RTS / CTS frames from interference. For example, a first wireless device may indicate, via a first frame, a modified network allocation vector (NAV) timeout duration that accounts for a full duration of an ELR frame. In some examples, the modified NAV timeout duration may be calculated to account for a difference in data rate of the ELR frame relative to non-ELR frames. For example, the first wireless device may transmit a first frame prior to an ELR RTS / CTS frame, and the first frame may indicate, via a duration field, the modified NAV timeout duration that is calculated in accordance with the ELR RTS / CTS frame.

Embodiments of the present disclosure relate to the technical field of communications, and provide a communication method and device, a communication system, and a storage medium. The method comprises: a first AP determines a first PPDU, wherein the first PPDU comprises a first TXOP shared with a second AP, the first PPDU is used for instructing an STA associated with the first AP and supporting a first function to enter a power saving mode during a first duration of the first TXOP, and / or for instructing an STA associated with the second AP not to update a basic network allocation vector (NAV), and the first function is entering the power saving mode upon receiving a basic service set (BSS) intra-PPDU; and the first AP sends the first PPDU. The embodiments of the present disclosure can provide a TXOP sharing method.

Certain aspects provide a method for wireless communications at a first wireless node. The method generally includes: outputting, for transmission to a second wireless node, a first frame indicating one or more candidate nodes with which a TXOP may be shared, the one or more candidate nodes including the second wireless node; performing a frame exchange with one or more third wireless nodes that shares a first BSS with the first wireless node; outputting, for transmission to the second wireless node, a second frame indicating a portion of the TXOP to be shared with the second wireless node, the second frame being outputted for transmission after the frame exchange; and obtaining, from the second wireless node, a third frame indicating that the TXOP is being returned back to the first wireless node.

The present disclosure relates to managing a network allocation vector (NAV) configuration in a wireless LAN system. According to an embodiment of the present disclosure, a method performed by a station (STA) in a wireless LAN system comprises the steps of: detecting a first frame including information on a second basic service set (BSS) color different from a first BSS color of the STA; configuring a network allocation vector (NAV) based on at least one of a recipient address (RA) and a sender address (TA) of the identified first frame; storing information about the second BSS color; receiving a second frame from an access point (AP) connected to the STA, the second frame including information about a coordinated AP for the AP, where the information about the coordinated AP includes information about a BSS color of the coordinated AP; ignoring the NAV based on the second BSS color corresponding to the BSS color of the coordinated AP; and performing data transmission while ignoring the NAV.

The invention relates to enhanced non-primary channel access, dynamic subband operation, and non-dynamic subband operation. This disclosure describes systems, methods, and devices that use per-bandwidth virtual sensing network allocation vectors (NAVs) for sub-band operations. For example, an access point may: transmit an overlapping basic service set (OBSS) frame using at least a subset of an operating bandwidth of the access point, where the OBSS frame notifies a receiving device operating in the at least subset of the operating bandwidth to set a network allocation vector (NAV) of the receiving device to be on only in the at least subset of the operating bandwidth; transmitting an initial control frame (ICF) using the operating bandwidth; identifying an initial control response (ICR), the ICR being received based on the ICF and based on the OBSS frame using at least a subset of the operating bandwidth; transmitting an in-BSS (in-BSS) transmission in a basic service set; and identifying an acknowledgement of the in-BSS transmission.

An apparatus configured to generate, for transmission, an initial control frame (ICF) for a transmission opportunity (TXOP) comprising a first duration and a second duration, wherein the first duration is set based on a time for a TXOP responder station to respond to the ICF with an initial control response (ICR) and a Short Interframe Space (SIFS), and wherein the second duration is set based on a time for data to be transmitted to the TXOP responder station, process, based on signaling received from the TXOP responder station, the ICR and generate, for transmission to the TXOP responder station, one or more data transmissions during the TXOP.

The embodiments of the present disclosure relate to the technical field of communications. Provided are communication methods and devices, a communication system, and a storage medium. A method comprises: a first access point (AP) determining a first radio frame, which comprises a protected transmission opportunity (TXOP) duration and a first TXOP shared with a second AP, wherein the first radio frame is used for instructing a receiving end of the first radio frame to set, on the basis of the protected TXOP duration, a basic network allocation vector (basic NAV) to be in a channel busy state, and the protected TXOP duration is greater than or equal to a timeout duration of the basic NAV; and the first AP sending the first radio frame. The embodiments of the present disclosure can provide a sharing mode of a TXOP and a setting mode of the basic NAV.

A method for switching channels in a wireless local area network is provided. A station, as a member of a Basic Service Set (BSS), receives information from an associated access point (AP) regarding the Non-Primary Channel Access (NPCA) primary channel within the BSS bandwidth of that BSS. The station receives inter-BSS Physical Layer Protocol Data Units (PPDUs) on the BSS primary channel and switches from the BSS primary channel to the NPCA primary channel to perform NPCA operations when the following conditions are met: (i) the channel occupied by the inter-BSS PPDU does not overlap with the NPCA primary channel, and (ii) the station maintains the value of the Network Allocation Vector (NAV) counter within the BSS at zero.

The present invention relates to a wireless communication method using a network allocation vector and a wireless communication terminal thereof. A wireless communication terminal for wireless communication is provided. The wireless communication terminal includes a transmission / reception unit and a processor. The processor receives a trigger frame by using the transmission / reception unit, and updates a network allocation vector based on the trigger frame. Wherein, the trigger frame triggers transmission of at least one wireless communication terminal.

This disclosure provides methods, components, devices and systems for channel access in coordinated spatial reuse. Some aspects more specifically relate to a shared access point (AP) ignoring the network allocation vectors (NAVs) indicated by transmissions from the sharing AP and the other shared APs during a shared transmission opportunity (TXOP). In some examples, the shared AP may ignore the NAVs indicated by transmissions from the sharing AP and the other shared APs during the shared TXOP in association with the control message transmitted by the sharing AP indicating that the TXOP is designated for spatial reuse also may indicate a transmit power backoff. Various aspects relate to the application of the transmit power backoff and the transmission schedule indicated by the control message for the duration of the shared TXOP by a shared AP. Various aspects relate to handling transmission by a shared AP during overlapping shared TXOPs.